A Synopsis of the Order Hyperoartii. 193 



streaked with white ; coxse yellow. Fore wings black ; the 

 basal half of cell and a broad fascia above inner margin 

 from base to beyond vein 2 reddish brown ; a spot at end of 

 Cfll and streak on costa above it yellow, irrorated with pale 

 olive-brown ; a postraedial quadrate, downwardly oblique, 

 brownish patch crossed by vein 3 ; a subterminal oblique 

 row of spots from costa to vein 4, yellowish, thickly irrorated 

 with pale olive-brown ; a marginal row of yellowish-white 

 spots, smaller and quadrate between veins 3-6, otherwise 

 elongated, the subc:)stal spots irrorated with brown. Hind 

 wings rufous ; a broad black fascia along subcostal : the 

 outer margin black, deeply dentate inwardly on veins, tlie 

 interspaces with yellowish spots at their base; a postmedial 

 black fascia from veins 2—1. Underneath the spots on fore 

 wings are chiedy clear yellow. 



Expanse 96 mm. 



Hah. Carillo. 



Allied to G. zagrcea, Feld., but the basal brown markings 

 are entirely different. 



XVIII. — A Synopsis of the Marsipohranchs of the Order 

 Hyperoartii. By C. Tate Regan, M.A. 



(Published by permission of the Trustees of the British Museum.) 



The Hyperoartii (Lampreys) are Marsipohranchs with the 

 nasal aperture on the upper surface of the head and the 

 naso-palatine canal ending blindly posteriorly. Eyes well- 

 developed (in the adult). Two semicircular canals. Mouth 

 with expanded toothed lips ; tongue with a single anterior 

 and a pair of posterior cuspidate laminse (compound teeth). 

 Branchial sacs seven on each side, not far behind the head, 

 communicating internally with a suboesophageal canal which 

 opens anteriorly into the |)harynx ; an extra-branchial skele- 

 ton forming a basket-work. Eggs small, numerous ; seg- 

 mentation holubiastic ; a metamorphosis. A caudal and two 

 dorsal fins, sometimes united. 



Tiie larvse {Ammocoeies) appear to be extremely similar in 

 all the northern genera. They are toothless, with a small 

 transverse lower lip and a hood-like upper lip ; a circle of 

 fringed barbels surrounds the mouth. The eyes are rudi- 

 mentary and subcutaneous, the sm dl gill-openings lie in a 



Ann. dc Mag. N. Hist. Ser. 8. Vol. vii. 13 



